Steering device

Abstract

The present invention reduces motor size in a steering device. To this end, this steering device ( 1 ) to be installed in a vehicle has: a power steering unit ( 12 ) positioned below the floor section ( 7 ) of the vehicle compartment ( 2 ); a steering shaft (first steering shaft ( 4 ), second steering shaft ( 6 ), and third steering shaft ( 11 )), one end of which is connected to a steering wheel ( 3 ) and the other end of which is connected to the power steering unit ( 12 ); and a coaxial motor ( 20 ) which applies a rotational force to the steering shaft and is provided in a manner such that the output shaft thereof is coaxial with the steering shaft.

What is claimed is: 
     
         1 . A steering device to be mounted on a vehicle, the steering device comprising:
 a power steering unit disposed below a floor of a vehicle cabin;   a steering shaft connected at one end to a steering wheel and connected at another end to the power steering unit, the steering wheel being disposed above the floor of the vehicle cabin; and   a coaxial motor including an output shaft arranged coaxially with the steering shaft, the coaxial motor applying a rotational force to the steering shaft.   
     
     
         2 . The steering device according to  claim 1 , wherein
 the coaxial motor is provided on a portion of the steering shaft, the portion being located below the steering wheel and above the floor of the vehicle cabin.   
     
     
         3 . The steering device according to  claim 1 , wherein
 the coaxial motor is provided below a shaft bracket, the shaft bracket supporting the steering shaft such that the steering shaft is rotatable.   
     
     
         4 . The steering device according to  claim 1 , wherein
 the power steering unit is hydraulic, and   a plurality of oil pumps are connected to the power steering unit.